Pangaea-means "all land"-a supercontinent that existed 300 million years ago continental drift- the movement of continents over time fossil-trace of an ancient organism that has been preserved in rock
Outline:
Summary
Africa and South America looks like they fit together
The Theory of Continental Drift
1910-Alfred Wegener
hypothesis of single landmass/Pangaea
supported ideas with study of landforms, fossils, and climate
Evidence from Landforms
used mountain of South America and Africa
Evidence from Fossils
common fossils found on different continents
Evidence from Climates
continents today have very different climate from millions of years ago
Scientists Reject Wegener's Theory
Wegener didn't have proof of HOW continents drifted
needed new and more explanations with how landforms had formed
Table of Contents
1.3 Drifting Continents
Vocabulary
Pangaea-means "all land"-a supercontinent that existed 300 million years ago
continental drift- the movement of continents over time
fossil-trace of an ancient organism that has been preserved in rock
Outline:
Summary
The Theory of Continental Drift
Evidence from Landforms
Evidence from Fossils
Evidence from Climates
Scientists Reject Wegener's Theory